from flask_restful import Api,Resource,reqparse,request
import json
from comment.models.index import *
from comment.utils.data2dict import data2dict,datalist2dict
from comment.utils.shopping_redis import redis_client

class Shopping_Category(Resource):

    # 商品分类的资源类
    def get(self):
        # # 将redis中读取数据
        data_cache = redis_client.get('index_category')

        if data_cache:  # 如果redis有数据，就返回redis中的数据
            return json.loads(data_cache) # 返回成字典类型
        else: # 没有的话，就从mysql查询数据,返回给用户并且写入redis
            data =self.getData(0)
            # rq = reqparse.RequestParser()
            # rq.add_argument('parent_id', required=True, type=int)
            # req = rq.parse_args()
            # data = self.getData(req.parent_id)
            if data:
                for item in data:
                    item.update({'list': ''})
                    data_second = self.getData(item['id'])
                    item['list'] = data_second
                    for item1 in data_second:
                        item1.update({'list': ''})
                        data_third = self.getData(item1['id'])
                        item1['list'] = data_third
                # 把查询到的数据写入redis
                redis_client.setex('index_category',3600*24,json.dumps(data)) # 过期时间；字典转换为字符串
                return data
            else:
                return {'message': 'none'}


    @staticmethod
    def getData(parent_id):
        res = Category.query.with_entities(Category.id, Category.parent_id, Category.name) \
            .filter(Category.parent_id == parent_id).order_by(Category.sort.asc()).all()

        if res:
            return datalist2dict(res)
        else:
            return 'none'


# 首页
class Shopping_HomeNewProduct(Resource):

    def get(self):

        res = HomeNewProduct.query.join(Product,HomeNewProduct.product_id == Product.id)\
            .with_entities(Product.id,Product.default_pic,Product.price,Product.product_name,
                           Product.rel_category3_id).limit(10).all()

        if res:
            data = datalist2dict(res)
            return data
        else:
            return {'message':'none'}

# 首页人气热搜的资源类
class Shopping_HomeRecommendProduct(Resource):

    def get(self):
        data_cache = redis_client.get('index_HomeRecommendProduct')

        if data_cache:
            return json.loads(data_cache)
        else:
            res = HomeRecommendProduct.query.join(Product,HomeRecommendProduct.product_id==Product.id)\
                .with_entities(Product.id,Product.default_pic,Product.product_name,Product.rel_category3_id,Product.price)\
                .limit(10).all()

            if res:
                data = datalist2dict(res)

                # 将查询到的数据写入redis
                redis_client.setex('index_HomeRecommendProduct',3600 * 24,json.dumps(data))
                return data
            else:
                return {'message':'none'}

# 专题广场
class Shopping_RecommendSubject(Resource):
    def get(self):
        res = CmsSubject.query.filter(
            CmsSubject.show_status == 1).all()

        res_list = []
        for res_obj in res:
            if res_obj:
                data = data2dict(res_obj)
                res_product = CmsSubjectProductRelation.query.join\
                    (Product, CmsSubjectProductRelation.product_id == Product.id).filter \
                    (CmsSubjectProductRelation.subject_id == res_obj.id).with_entities \
                    (Product.id, Product.default_pic, Product.price, Product.product_name,
                     Product.rel_category3_id).limit(10).all()
                if res_product:
                    data_product = datalist2dict(res_product)
                    data['productList'] = data_product
                    res_list.append(data)
        if len(res_list) > 0:
            print(res_list)
            return res_list
        else:
            return {'message': 'none'}